Guard still makes an R&P, but it isn't the 8:39 listed above. It is 8:41, so even shorter. Here's a ratio comparison:

9:38 4.22
8.39 4.875
8:41 5.125

Sounds too short for regular highway work.

It's not too short with 17" rims. I drove mine all the way from Alabama to Florida with no issues whatsoever. Around town it is absolutely perfect. But....when you are on the gas and nail it, man, you better hold on for dear life with the 8:41. It will rip you apart, literally. 4th will blast like first gear deep into the 100mph range in a fraction of a second. My 8:41 R&P is a factory stamped Porsche part, so I presume Porsche offered it at one time as an upgrade. I don't know if they still do.